I've realised that for new entry to crypto as of now ($7000/btc), it doesn't make any sense to purchase altcoin with the current BTC exchange rate.
Chances are, when BTC has a pull back; altcoin will increase in value.
But the capital appreciation from altcoin will knock off by the decreased value in BTC when we cash out to fiat currency.
SOOOOOOOO, the big question is...can I purchase altcoin with ETH?
There are some multi assets wallet like Coinomi and Exodus that have a built in exchange, you can use it to exchange your Ethereum to other altcoins or Ethereum tokens. Shapeshift and Changelly also lets you convert any altcoins to other altcoins without creating any account, you just have to select the input and outputs. For example your input is Ethereum and output is Bitcoin, provide the destination Bitcoin address and it will generate address where you will send your Ethereum.